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    Movable divided inspection system and method
    2.
    发明授权
    Movable divided inspection system and method 有权

    公开(公告)号：US10156528B2

    公开(公告)日：2018-12-18

    申请号：US15691748

    申请日：2017-08-31

    Applicant: NUCTECH COMPANY LIMITED

    Inventor： Zhiqiang Chen ,  Yuanjing Li ,  Shangmin Sun ,  Yu Hu ,  Yuan Ma ,  Qiangqiang Wang ,  Long Du ,  Wei Li

    IPC: G01F23/00 ,  G01N23/04 ,  G05D1/00 ,  G01V5/00

    Abstract: This invention relates to a movable divided inspection system and method, wherein the scanning inspection system comprises a first radiation source, a first detection means, a first automated guided vehicle and a second automated guided vehicle. The first radiation source is mounted on the first automated guided vehicle. The first detection means is mounted on the second automated guided vehicle. The first automated guided vehicle and the second automated guided vehicle are able to drive the first radiation source and the first detection means to a preset scan inspection position, so as to form a scanning passage for passage of an article to be scanned between the first and second automated guided vehicle, such that scanning inspection of said article to be scanned is realized by relative movement of said article to be scanned with reference to said first automated guided vehicle and said second automated guided vehicle.

    Vehicle inspection system
    3.
    发明授权
    Vehicle inspection system 有权

    公开(公告)号：US10082596B2

    公开(公告)日：2018-09-25

    申请号：US14582097

    申请日：2014-12-23

    Applicant: TSINGHUA UNIVERSITY ,  NUCTECH COMPANY LIMITED

    Inventor： Yu Hu ,  Jianmin Li ,  Hui Meng ,  Yuan Ma ,  Weifeng Yu ,  Jinning Liang ,  Shangmin Sun

    IPC: G01N23/04 ,  G01V5/00 ,  F16M13/02 ,  B65G15/44 ,  B65G17/08 ,  B65G47/66

    CPC classification number: G01V5/0016 ,  B65G15/44 ,  B65G17/08 ,  B65G47/66 ,  F16M13/02

    Abstract: The present invention discloses a vehicle inspection system, comprising: an inspection passage; a vehicle dragging system arranged in the inspection passage, wherein the vehicle dragging system comprises a first dragging means and a second dragging means, which are sequentially arranged along a vehicle dragging direction, and in the vehicle dragging direction, the first dragging means is arranged at the upstream of the second dragging means, and a separating section is arranged between the first dragging means and the second dragging means, so that the first dragging means and the second dragging means are separated by a preset distance in the vehicle dragging direction; and a radiographic inspection system, wherein at least a part of paths of the beams of the radiographic inspection system passes through the separating section between the first dragging means and the second dragging means.

    DUAL-ENERGY RAY SCANNING SYSTEM, SCANNING METHOD AND INSPECTING SYSTEM
    4.
    发明申请
    DUAL-ENERGY RAY SCANNING SYSTEM, SCANNING METHOD AND INSPECTING SYSTEM 审中-公开

    公开(公告)号：US20170094762A1

    公开(公告)日：2017-03-30

    申请号：US15278043

    申请日：2016-09-28

    Applicant: Nuctech Company Limited

    Inventor： Yu Hu ,  Shangmin Sun ,  Juan Zheng ,  Bicheng Liu

    IPC: H05G1/30 ,  G01V5/00 ,  G21K1/10

    CPC classification number: H05G1/30 ,  G01N23/083 ,  G01N2223/313 ,  G01N2223/423 ,  G01V5/0041 ,  G21K1/043 ,  G21K1/10

    Abstract: The present invention discloses a dual-energy ray scanning system, scanning method and inspecting system and relates to the radiation scanning, imaging and detecting field. The dual-energy ray scanning system comprises a ray source for alternately emitting a high energy ray and a low energy ray; a filter comprising a low energy filtering element and a low energy transmitting element; and a control device for controlling said ray source and said filter to make said low energy filtering element of said filter be aligned with a beam exit direction of said ray source when said ray source emits a high energy ray so as to filter low energy portion of said high energy ray out and transmit high energy portion of said high energy ray out, and for controlling said ray source and said filter to make said low energy transmitting element of said filter be aligned with said beam exit direction of said ray source when said ray source emits the low energy ray so as to transmit said low energy ray out. This not only can improve transmissivity of the high energy ray, but also does not lose the spatial wire resolution of the low energy ray, and this guarantees the index of transmissivity and the index of spatial wire resolution at the same time, such that the dual-energy ray can sufficiently utilize a difference in its penetration characteristics to recognize the object to be inspected, thereby reaching the objective of security inspection.

    VEHICLE TYPE RECOGNITION METHOD AND FAST VEHICLE CHECKING SYSTEM USING THE SAME METHOD
    5.
    发明申请
    VEHICLE TYPE RECOGNITION METHOD AND FAST VEHICLE CHECKING SYSTEM USING THE SAME METHOD 审中-公开
    车辆类型识别方法和使用相同方法的快速车辆检查系统

    公开(公告)号：US20160180186A1

    公开(公告)日：2016-06-23

    申请号：US14972106

    申请日：2015-12-17

    Applicant: NUCTECH COMPANY LIMITED

    Inventor： Shangmin Sun ,  Yanwei Xu ,  Qiang Li ,  Weifeng Yu ,  Yu Hu

    IPC: G06K9/32 ,  H04N5/33 ,  G06K9/20 ,  G06K9/00

    CPC classification number: G06K9/3241 ,  G06K9/00201 ,  G06K9/00771 ,  G06K9/209 ,  H04N5/33

    Abstract: A vehicle type recognition method based on a laser scanner is provided, the method includes detecting that a vehicle to be checked has entered into a recognition area; causing a laser scanner to move relative to the vehicle to be checked; scanning the vehicle to be checked using the laser scanner on a basis of columns, and storing and splicing data of each column obtained by scanning to form a three-dimensional image of the vehicle to be checked, wherein a lateral width value is specified for each single column of data; specifying a height difference threshold; and determining a height difference between the height at the lowest position of the vehicle to be checked in data of column N and the height at the lowest position of the vehicle to be checked in data of specified number of columns preceding and/or succeeding to the column N.

    Abstract translation: 提供了一种基于激光扫描仪的车辆识别方法，该方法包括：检测要检查的车辆已经进入识别区域; 使激光扫描仪相对于待检查的车辆移动; 使用激光扫描仪基于列扫描要检查的车辆，以及存储和拼接通过扫描获得的每列的数据，以形成要检查的车辆的三维图像，其中为每一个指定横向宽度值 单列数据; 指定高度差阈值; 并且确定在列N的数据中要检查的车辆的最低位置处的高度与要检查的车辆的最低位置处的高度之间的高度差，该数据在指定的列数之前和/或之后的数据中 列N.

    Laser speed measuring method, control device and laser velocimeter
    7.
    发明授权
    Laser speed measuring method, control device and laser velocimeter 有权

    公开(公告)号：US11573322B2

    公开(公告)日：2023-02-07

    申请号：US16826235

    申请日：2020-03-22

    Applicant: NUCTECH COMPANY LIMITED ,  NUCTECH (BEIJING) COMPANY LIMITED

    Inventor： Jian Li ,  Shangmin Sun ,  Yongming Wang ,  Yanwei Xu ,  Weifeng Yu ,  Yu Hu ,  Chunguang Zong

    IPC: G01S17/58 ,  G01S7/48 ,  G01S7/481 ,  G01S17/08

    Abstract: The present disclosure provides a laser speed measuring method, control device and a laser velocimeter, and relates to the technical field of security inspection. The laser speed measuring method comprises the steps of: acquiring detection data within a predetermined detection angle range in a plurality of paralleled horizontal planes having different heights, from a plurality of laser rays detected towards a road extending direction in the horizontal plane; acquiring three-dimensional point cloud data according to the detection data; determining a position of a measured object in the road extending direction according to the three-dimensional point cloud data; and determining a speed of the measured object according to the position change of the measured object along the road extending direction at different timing.

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